TMOV Thermally Protected Varistors

Littelfuse TMOV Thermally Protected Varistors are radially leaded metal oxide varistors (MOVs) with a thermally activated element designed to open during overheating. The integrated thermal element and the enclosure design work together to facilitate surge-protection module compliance to UL1449. These performance capabilities of Littelfuse TMOV varistors serve cord or permanently connected applications. These Littelfuse varistors offer quick thermal response due to the proximity of the thermal element to the MOV body. This integrated configuration provides the added benefit of lower inductance than most discrete solutions.

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Qty. RoHS ECAD Model Series
Product
Mounting Style
Termination Style
Voltage Rating AC
Voltage Rating DC
Varistor Voltage
Clamping Voltage
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Peak Surge Current
Surge Energy Rating
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Minimum Operating Temperature
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Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1.409In Stock
1.500Expected 20/04/2026
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 300 VAC 385 VDC 517 V 775 V 20 mm 10 kA 250 J 800 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1.431In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 320 VAC 561 VDC 561 V 840 V 20 mm 10 kA 372 J 750 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1.630In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 385 VAC 505 VDC 682 V 1.025 kV 20 mm 10 kA 300 J 700 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1.200In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 575 VAC 1.568 kV 20 mm 10 kA 275 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1.195In Stock
1.200Expected 08/06/2026
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 625 VAC 825 VDC 1 kV 1.98 kV 20 mm 10 kA 480 J 175 pF - 55 C + 85 C Bulk
Littelfuse Varistors 150V 20KA SQ 25MM 25S ROHS / LEAD FREE
Datasheet
770In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 150 VAC 200 VDC 216 V 390 V 25 mm 20 kA 220 J 2300 pF - 55 C + 85 C Bulk
Littelfuse Varistors 300V 20KA SQ 25MM PB FREE 25S
Datasheet
800In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 300 VAC 385 VDC 517 V 765 V 25 mm 20 kA 370 J 1150 pF - 55 C + 85 C Bulk
Littelfuse Varistors 550V 20KA SQ 25MM 25S ROHS/PB FREE
Datasheet
506In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 550 VAC 745 VDC 1.001 kV 1.475 kV 25 mm 20 kA 550 J 630 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
559In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 125 VAC 150 VDC 198 V 300 V 14 mm 6 kA 35 J 1100 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
691In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 175 VAC 225 VDC 297 V 455 V 14 mm 6 kA 70 J 700 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
1.334In Stock
4.200Expected 13/04/2026
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 250 VAC 320 VDC 429 V 650 V 14 mm 6 kA 100 J 500 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
930In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 275 VAC 350 VDC 473 V 710 V 14 mm 6 kA 110 J 450 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
784In Stock
3.000On Order
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 300 VAC 517 VDC 517 V 775 V 14 mm 6 kA 125 J 400 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
1.055In Stock
Min.: 1
Mult.: 1
Reel: 400

TMOV MOVs PCB Mount Radial 300 VAC 470 VDC 517 V 775 V 14 mm 6 kA 125 J 400 pF - 55 C + 85 C Reel, Cut Tape
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
509In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 385 VAC 505 VDC 682 V 1.025 kV 14 mm 6 kA 150 J 360 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
245In Stock
1.200Expected 16/06/2026
Min.: 1
Mult.: 1
Reel: 400

TMOV MOVs PCB Mount Radial 385 VAC 620 VDC 682 V 1.025 kV 14 mm 6 kA 150 J 360 pF - 55 C + 85 C Reel, Cut Tape
Littelfuse Varistors Thermally Protected 14MM
Datasheet
559In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 550 VAC 715 VDC 1.001 kV 1.355 kV 14 mm 6 kA 190 J 180 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
603In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 125 VAC 150 VDC 198 V 300 V 20 mm 10 kA 52 J 2400 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
854In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 140 VAC 180 VDC 242 V 360 V 20 mm 10 kA 110 J 1750 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
942In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 175 VAC 225 VDC 297 V 455 V 20 mm 10 kA 135 J 1400 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
828In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 200 VAC 344 VDC 344 V 530 V 20 mm 10 kA 154 J 1250 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1.117In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 250 VAC 320 VDC 429 V 650 V 20 mm 10 kA 170 J 1000 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
19In Stock
1.200Expected 12/05/2026
Min.: 1
Mult.: 1
Reel: 300

TMOV MOVs PCB Mount Radial 300 VAC 385 VDC 517 V 775 V 20 mm 10 kA 250 J 800 pF - 55 C + 85 C Reel, Cut Tape
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
406In Stock
Min.: 1
Mult.: 1
Reel: 300

TMOV MOVs PCB Mount Radial 320 VAC 510 VDC 561 V 840 V 20 mm 10 kA 372 J 750 pF - 55 C + 85 C Reel, Cut Tape
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1.200In Stock
Min.: 1
Mult.: 1
Reel: 300

TMOV MOVs PCB Mount Radial 385 VAC 620 VDC 1.025 kV 20 mm 10 kA 700 pF - 55 C + 85 C Reel, Cut Tape